Materials Literature
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Nano-ZnO and nano-montmorillonite(MMT)particles were added to improve the dielectric performance of low density polyethylene(LDPE).And the coupling agent was used in surface modification of nanoparticles.The composites of nano-ZnO/LDPE and nano-MMT/LDPE were prepared by melt blending method.The sample was characterize…
1-butyl-3-methylimidazolium acetate([BMIM]Ac) was synthesized from 1-butyl-3-methylimidazolium chloride([BMIM]Cl) via the ion exchange method. These imidazolium ionic liquids(ILs) were used as solvents to dissolve collagen fibers. The solubility and the change of collagen structure as well as thermal stability after d…
High pure Ti3AlC2 was fabricated from TiH2/2TiC/1.1Al powders under Ar atmosphere at1450 ℃ for 2h by a tube furnace.Ti3AlC2 powders are immersed in 40% and 50% concentrated HF solution at room temperature for 24h by magnetic stirring,which led to Al atoms being selectively etched away from the Ti3AlC2 structure.X-ray…
The high-quality highly (100) oriented diamond films each with controllable surface morphology, quality, orientation, and growth rate are prepared at low pressure by microwave plasma chemical vapor deposition. The results show that there is a coupled effect between substrate temperature and methane concentration on th…
A magnesium alloy AZ31 was processed by high-pressure torsion (HPT) at room temperature. Microstructure investigations show the material has a grain size as fine as ~450 nm after 5 turns of HPT processing. X-ray texture measurements show most grains have the {0001}<uvtw> fibre, with their c-axis parallel to the HPT to…
초탄성 형상기억합금은 상온에서 소성 범위를 초월하여 상당량의 변위를 가하더라도 하중을 제거 후에 별도의 열처리를 가하지 않더라도 원상태로 복원이 가능한 특수한 금속이다. 자동치유가 가능한 형상기억합금의 특유한 재료적인 성질로 인하여 구조물에서 변위가 집중되는 부분에 기존에 주로 사용되는 강재를 대체하여 이러한 특수 합금 재료가 널리 활용되기 시작하였다. 하지만 형상기억합금을 활용한 구조물의 기본적인 설계와 성능 검증을 하기 위해 고등적인 구조해석에 필요한 재료적인 모델의 개발과 연구의 노력이 부족하기 때문에 본 재료를 현장에서 적용하기에는 여전히 많은 제약을 받고…
It is well known that the corrosion resistance of steels is improved by the addition of alloying elements. For stainless steels, a large amount of Cr is added to obtain good corrosion resistance and the addition of rare metals such as Mo and Ni etc. are applied for further improvement of the corrosion resistance depen…
Solvent vapor annealing (SVA) is a solution-assisted method which is economical and efficient to improve crystallinity in organic molecular thin films. By exposing thin films of organic semiconductors (OSCs) to an environment saturated with solvent vapors, the OSC molecules will reorganize in a higher degree of order.…
Asian Journal of Chemistry, a Multidisciplinary Chemistry Journal is an Peer Reviewed International Journal and publishes from India. The journal has been established since January 1989 on a firm foundation of International Quality Research. This Journal encompasses all branches of chemistry and its sub – disciplines…
Asian Journal of Chemistry, a Multidisciplinary Chemistry Journal is an Peer Reviewed International Journal and publishes from India. The journal has been established since January 1989 on a firm foundation of International Quality Research. This Journal encompasses all branches of chemistry and its sub – disciplines…
Photochemical treatment using ultraviolet radiation was used to prepare fluorescent silver nanoparticles/nanoclusters from AgNO3 precursor upon its encapsulation with Poly (Acrylic Acid). Spectrofluorometric analysis showed an excitation spectra with maxima at approximately 450 nm and 550 regions nm when fixed wavelen…
The mechanical behavior of steel employed in the hull of a steel tank damaged by corrosion has been analyzed. The tank was used to filter a deep-water well for an 8-year period. Influence of porosity and dissolution of material may be introduced in the main constitutive relation adding a new damage variable C, which d…
In this study, cellulose was extracted from corn cobs by successive hot NaOH solution and followed by H2O2 bleaching. XRD pattern show characteristic peak of Cellulose I. Microfibrillated cellulose (MFC) was successfully prepared by dissolving the extracted cellulose in NaOH/urea solution, shearing in a homogenizer an…
Thermal-gradient chemical vapor infiltration (TG-CVI) is an alternative process to the classical CVI by involving a temperature gradient to obtain uniform densification. It allows fabricating C/SiC and C/C composites starting from a fibrous preform and gasses precursor. The main interest of these processes is increasi…
Hybrid composite Materials have extensive engineering application where strength to weight ratio, low cost and ease of fabrication are required. Hybrid composites provide combination of properties such as tensile modulus, compressive strength and impact strength which cannot be realized in composite materials. In rece…
We present an experimental set-up permitting Raman and luminescence spectroscopy studies in a commercial Physical Properties Measurement System (PPMS) from Quantum Design. Using this experimental set-up, gaseous, liquid and solid materials, in bulk or thin film form, may be investigated. The set-up is particularly sui…
Compressed and uncompressed crushable foam blocks were subjected to projectile impact at low velocity to evaluate and compare the foam resistance against the projectile impact. Among many crushable foam applications their energy absorbing characteristics play a prominent role to secure the structures against impacting…
The behavior of the interference absorption coefficient of X-rays in Laue geometry depending upon the disposition of diffraction vector and temperature gradient vector in the perpendicular direction to the reflecting atomic planes family was experimentally studied. The study was carried out for the different thickness…
The soils of Banaganapalle mandal in Kurnool district of Andhra Pradesh were developed from dolomite and granite-gneiss under semi-arid climate at an average elevation of 243 m above mean sea level (msl). These soils were investigated for clay mineralogy using X-ray diffraction technique and chemical analysis of clay.…
Transition metals doped Mn-based catalysts were prepared via ultrasonic immersing method for the selective catalytic reduction (SCR) of NOx from fuel gas. The Catalysts’ DeNOx efficiency and tolerance to sulfur were investigated in the paper. XRD results demonstrate high dispersion of Mn, Ce and M (Pr, Y, Zr, W) eleme…